Food Plant: Fagus (Beech)

Egg: Underside of leaf

Mine: June - July, end August - October

Notes: A Gallery completely without coiled frass, egg on underside against mid-rib amongst hairs in angle with vein (this distinguishes it from S.hemargyrella, which has the egg away from the midrib). The larva is yellow, dark head and prothoracic plate.  

Data: Lancashire

Image:© Ian Kimber